Final Second Five-Year Review Report Fort Ord Superfund Site ...

lubricant storage. A buried container, which was originally used as a muffler for exhaust from engine
testing, may also have been used for liquid waste storage. Tanks and contaminated soils were excavated
during cleanup activities at the site, and the area was backfilled with clean soil.
Cannibalization Yard and Industrial Area
The Cannibalization Yard is a small (0.5-acre) paved and fenced area located within the larger (18.5 acre)
paved and fenced Industrial Area. The entire 18.5-acre area is bounded by Highway 1 to the west, a
baseball field to the east, and Tenth Street to the south. The SPRR spur separates the Industrial Area from
the DOL Automotive Yard to the north. The area included a machine shop, a furniture repair shop, a
laundry facility, a temporary hazardous waste container storage area, an oil/water separator, and an AST
used for storing waste oil. Beginning in 1964, the Cannibalization Yard was used to disassemble old
equipment, primarily decommissioned military vehicles. Used motor oil was collected and stored onsite
in 55-gallon drums. Between January 1988 and August 1988, waste oil was stored in a 450-gallon AST
in the hazardous waste storage area at the machine shop adjacent to the yard. Other vehicle maintenance
activities included removal and storage of the following types of fluids and parts gasoline (leaded and
unleaded), diesel fuel, brake fluid, asbestos-containing brake shoes and linings, antifreeze/coolants, lead
and acid from batteries, lubricating greases, and transmission fluids. Prior to the installation of the
oil/water separator at the northeast corner of the yard, runoff from the site flowed down the sloped area
northeast of the Cannibalization Yard toward the baseball field. The site is no longer active, and
contaminated soils were excavated during cleanup activities at the site, and the area was backfilled with
clean soil.
Southern Pacific Railroad (SPRR) Spur
The SPRR spur (part of Site 13), an area of approximately 0.8 acres, consisted of the right-of-way along a
portion of the railroad spur that extends northward from the Southern Pacific Railroad track west of
Highway 1 and curves east through an industrial complex. The portion of the railroad track discussed
here extends east from the main track east of Highway 1, across First Avenue, and between the DOL
Automotive Yard and the Cannibalization Yard and surrounding Industrial Area. The rest of the railroad
spur was investigated during the characterization of Site 13. The relatively flat right-of-way is mostly
unpaved except in the areas adjacent to loading docks and where the spur crosses First Avenue. The
railroad spur was used to transport troop materials and equipment from the main rail line to storage
facilities between the DOL Automotive Yard and the Industrial Area. The SPRR spur is of concern
because oil or fuels may have been sprayed in this area for dust control. Contaminated soils were
excavated during cleanup activities at the site, and the area was backfilled with clean soil.
7.1.2 Remedial Actions
One groundwater and three soil remedial units (SRU) were defined at Sites 2/12, as described below.
Groundwater Remedial Unit (VOC Plume at Sites 2 and 12)
The groundwater remedial unit is defined as groundwater at Sites 2/12 containing the dissolved VOCs
TCE, 1,2- DCA, DCE, and PCE that exceed aquifer cleanup levels (see Table 7).
The vertical extent of the affected groundwater ranges from the top of the water table to the top of the
sandy silt layer that divides the 180-Foot Aquifer into upper and lower zones. The affected water-bearing
zone beneath Sites 2/12 is the Upper 180-Foot Aquifer, which is the uppermost water-bearing zone in the
vicinity and has approximately 75 to 80 feet of saturated thickness. Depth to water is approximately 70 to
80 feet below ground surface (bgs) at the eastern edge of the plume (Site 12) and approximately 40 feet
bgs at the western edge (Site 2). The sandy silt layer dividing the 180-Foot Aquifer appears to have
limited vertical migration of dissolved VOCs. The groundwater plume as of July 2006 is shown on
Plate 3.
Final
7-2
FORMER FT ORD 5YR REVIEW 2007_FINAL United States Department of the Army